http://dergiler.ankara.edu.tr/dergiler/37/729/9256.pdf
http://acikerisim.ikc.edu.tr:8080/xmlui/bitstream/handle/11469/397/276-YLT%20Mehmet%20NAS%202018.pdf?sequence=1&isAllowed=y
http://www.itobiad.com/download/article-file/316802